As you can see from the map above, the school shootings over the past 12 months touched many regions of the country, although they were rarer in Northern states and the Intermountain West.

They occurred in classrooms, in hallways, in parking lots and on baseball and football fields. The deadliest one since Parkland was in May at a high school in Santa Fe, Texas, where 10 people died — eight students and two teachers — after a 17-year-old gunman opened fire in an art class.